720359217 has 64 divisors (see below), whose sum is σ = 1191456000. Its totient is φ = 428198400.

The previous prime is 720359137. The next prime is 720359219. The reversal of 720359217 is 712953027.

It is not a de Polignac number, because 720359217 - 2¹⁶ = 720293681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (720359219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 609367 + ... + 610547.

It is an arithmetic number, because the mean of its divisors is an integer number (18616500).

Almost surely, 2^720359217 is an apocalyptic number.

It is an amenable number.

720359217 is a deficient number, since it is larger than the sum of its proper divisors (471096783).

720359217 is a wasteful number, since it uses less digits than its factorization.

720359217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1273 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 720359217 is about 26839.5085089128. The cubic root of 720359217 is about 896.4299797862.

The spelling of 720359217 in words is "seven hundred twenty million, three hundred fifty-nine thousand, two hundred seventeen".